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"1885 View of wooden form for concrete lining in the 18-foot Penstock Branches. January 26th, 1933.
1888 View of yard for the manufacturing of porous drain tiles in the Spillways. January 26th, 1933.
1898 Hi-Mix Concrete Plant and mixers transported ready for placing. January 27th, 1933.
1908 Invert concrete in the Inclined Spillway Tunnel, at its junction with #1 Diversion Tunnel. January 30th, 1933."

"1885 View of wooden form for concrete lining in the 18-foot Penstock Branches. January 26th, 1933.
1888 View of yard for the manufacturing of porous drain tiles in the Spillways. January 26th, 1933.
1898 Hi-Mix Concrete Plant and mixers transported ready for placing. January 27th, 1933.
1908 Invert concrete in the Inclined Spillway Tunnel, at its junction with #1 Diversion Tunnel. January 30th, 1933."

"1885 View of wooden form for concrete lining in the 18-foot Penstock Branches. January 26th, 1933.
1888 View of yard for the manufacturing of porous drain tiles in the Spillways. January 26th, 1933.
1898 Hi-Mix Concrete Plant and mixers transported ready for placing. January 27th, 1933.
1908 Invert concrete in the Inclined Spillway Tunnel, at its junction with #1 Diversion Tunnel. January 30th, 1933."